Keep getting an error.
Hi all again, what would be the correct answer for this one?
In a car database there is a Sale table with columns, SaleID, CarID, CustomerID, LocationID, SalesRepID, SaleAmount and SaleDate and a Customer table with columns, CustomerID, FirstName, LastName, Gender and SSN. Use a subquery along with IN to list all sales to female customers. (Gender = 'F') Select all columns.
Steven Parker195,592 Points
When you use "IN" with a subquery to match items, it's important to be sure the subquery is selecting the same kind of item as the one you want to match with. In your example, your subquery is selecting "CustomerID", but the WHERE clause is trying to match it with "SaleID".
Try changing your WHERE clause to match on "CustomerID" to go with what the subquery is selecting.